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Finding the Fourth Proportional to 111,415.52, 153,738.60 and 63,024.05

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Solution

The fourth proportional to 111,415.52, 153,738.60 and 63,024.05 is: 86,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,415.52 : 153,738.60 = 63,024.05 : x
  2. Step 2: Convert to fraction form
    111,415.52/153,738.60 = 63,024.05/x
  3. Step 3: Cross multiply
    111,415.52x = 153,738.60 × 63,024.05
  4. Step 4: Simplify right side
    111,415.52x = 9,689,228,444.64
  5. Step 5: Solve for x
    x = 9,689,228,444.64/111,415.52
  6. Step 6: Final answer
    x = 86,964.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.